Machine for waxing paper



G'. W. BANCROFT. MACHINE POR WAXING PAPER.

l 10.255,129. Patented Manzmsz..

MISQ:

, l Fig@ j I UNITED STATES PATENT OFFICE.

GEORGE W. BANCROFT, OFTLYNN, MASSACHUSETTS.

MACHINE FOR WAXING PAPER. l

SPECIFICATION forming part of Letters Patent No. 255,129, dated March 21, 1882.

Application filed October 17, 1879.

To all whom it 'may concern Be it known that I, GEORGE W. BANcRoFT,

of Lynn, in the county ofEssex and Commonwealth of Massachusetts, have invented an Improvement in Machines for Waxing Pa.-C

per, of which the following is a speciiication.

This invention relates to machines for waxing paper, and is an improvement upon the passing under this roller and through the waxwas led between it and another roller placed aboveit, and thence to the reel, on which it was finally wound, sufficient time being given.

to the paper for the cooling of the wax in its passage from the upper roller to the reel.

From this Vdescription and from what follows the dierences between my machine and those which have preceded it will readily be understood.

In the drawings, Figure l is a longitudinal central section of the machine. Fig. 2 is a side elevation thereof. Fig. 3 is an end elevation.

Like letters indicate like parts in all the iigures. y Y

-A represents the platform of the machine. At oneend of this platformis placed the smoothing and tension rack B, consisting of a grid of bars, through which the paper to be waxed is led from the rolls, passing alternately under and over the grids as a filling-thread is passed through warp threads in weaving. The paper passes over the terminal bar of this grid, and is led into the waxing-pan, C. This waxing-pan is provided with a steam-pipe, c, which serves to heat the wax, and under which the paper is passed, so as to secure that it shall dip into the melted wax. A pair of geared rolls, D D', are erected over this pan, not dipping into the wax. The lower one is of polished metal, and the upper one is covered with a jacket of rubber or other suitable material. The paper, after having passed through the waxing-pan, is led under the roll D,and back ward between the rolls D D', and then forward over'the top of the roll D. These rolls are adjustable toward and from each other, and one of them being provided with an elastic surface, the pressure can be. very nicely regulated, so that the proper amount of melted wax which the paper has taken up shall be very nicely and smoothly compressed into the texture of the paper, while the remainder isl removed. The paper, as it leaves the upper roll, is carried forward over a pair of heated bars, E E', passing over the top one, then downward and backward, and then forward under the lower bar, and thence proceeding to the reel F, on which it is wound. By this series of machinery the paper is rst smoothed infthe grid B, then thoroughly immersed in the melted wax, and then the melted wax is uniformly and perfectly rolled into the texture of the paper, and afterward, by the passage over the heated bars E E', both sides of the paper are thoroughly smoothed and ironed while hot, and any superfluous wax removed from both surfaces of the paper.

It is obvious that the bars E E', located be tween the rollers and the reel, may be employed indifferently with any rollers, and will serve to some extent their purpose, whether the lower roller of the rolling train dips into the waxing-pan or not, anmlysthertisheated wt, and that also the said Bars EE would perform their function to some extent without being heated; and itis also obvious that the covering of the roll might be of some other substance than vulcanized rubber. The most convenient and beneficial construction of the machine is, however, to make it as I have described.

In waxing tissue-paper of light weight it is not necessary to pass the paper through the ironing device, as above described, as it is sufficiently polished by being passed over one of the two bars E E.

It is obvious that in lieu of the pair of bars E E serving to smooth and clean the paper,a pair of calender-rolls, heated or not, maybe employed, or, in case of moderately heavy paper, a pair or grid of blunt or obtuse-angled scrapers, over which the paper should `pass with only slight deections; but these are clearly similar to what I have described.

It will be observed that the grid B gives IOO smoothness and tension to the paper while waxing, and thus exercises an importantinfueuee on the quality and uniformity ot' the product, in connection with the straining devices of rolls, bars, and reel, or each of them.

Having thus fully described my invention, I claim and desire to secure by Letters Patent of the United States- 1. The combination of the metallic roller D and the elastic-surfaced roller D', loca-ted over the Waxing-pan G, with the Waxing-pan C,and with the steam-pipe, located near the bottom ofthe same, and operated together substantially as described.

2. The pressure-rolls D D', located above the Waxing-pan, in combination with said pan, and with the steam pipe or bar e, submerged in the wax,and beneath which thepaper passes from the grid to the pressure-rolls, substantially as set forth.

3. As a paper-waxing apparatus, the combination of a heated Waxing-pan, provided with a bar beneath its surface, with a pair of distributing, compressing, and calender rolls, located above or nearly over said pan, and an independent smoothing and cleaning device located on the delivery side of said rollers, substantially as described.

4. The combination, in a machine for waxing paper, of the grid B with the bar e, pan C, and rollers D D', substantially as and for the pur pose described.

5. The combination, in a machine forwaxing paper, of the grid B with bar e, pan C, and smoothing device E E', substantially as described.

6. The combination, in a machine for waxing paper, of the grid B with bar c, pan C, and reel F, substantially as described.

GEORGE W. BANCROFT.

Witnesses:

F. F. RAYMOND, 2d, A. J. OE'rrINGER. 

